Intermittently-operable take-up mechanism for looms



May 10 1927. I 1,628,489

H. H. BURDETT INI'ERMITTEjiNTLY OPERABLE TAKE-UP MECHANISM FOR LUOMS Filed Dec. 1 1, 1925 2 Sheets-Shut 1 \nvenTor.

"Horace H. Burden byMMiM I ATTys.

H. H. BURDETT INTERMITTENTLY OPERABLE TAKE-UP MECHANISM FOR LOOMS Filed Dec. 11, 1925 2 Sheets-Sheet 2 Fig.

lnvenTor.

Horace H. Burden Patented May 10, 1927.

PAT lQEQ HORACE H. BURDEIT, OF I-IOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COR- PORATION, OF I-IOPEDALE, MAiSSACHUSETTS, A CORPORATION OF MAINE.

INTERMITTENTLY-OPEEABLE TAKEUP MEGHANISM FOR LOOMS.

Application filed December 11, 1925. Serial No. 74,744.

This invention relates to improvements in looms and the object thereof is to provide mechanism for weaving an open mesh fabric, such as tobacco cloth or netting, with re-enforcing stripes formed by closely massing the filling at predetermined intervals and preferably during predetermined periods.

A further object of the invention is to provide a novel mechanism for producing a transverse re-enforcing stripe in the web of fabric by intermittently interrupting the positive movement of the take-up roll by mechanism operable conjointly by the lay and the means for actuating the take-up roll at predetermin d intervals acting temporarily to release the take-up roll from operative relation to its actuating means.

A further object of the invention is to provide means for releasing the take-up roll from its actuating means operable by the movement of the lay, with means operable by said actuating means to restore the rotative movement of the take-up roll after a predetermined period.

A further object of the invention is to provide various adjustments by means of which the formation of the transverse rel-enforcing stripes may be accurately controlled.

Other objects and features of the invention will more fully appear from the following description and the accompanying drawings and will be particularlypointed out in the claims.

The present invention is adapted to be applied to usual forms of looms and is illustrated herein as applied to the take-up mechanism of the usual Northrop type of loom illustrated in Patent No. 982 390 Rhoades granted January 24, 1911. Only so much of the take-up mechanism is illustrated in the drawings as is necessary to disclose the present invention and its application to the loom of. the type above described.

In the drawings:

Fig. l is a front elevation of the take-up mechanism, partially broken away and partially in section;

Fig. 2 is a view, partially in elevation and partially in section, on line 22 Fig. 1, viewed from the right toward the left; and,

Fig. 3 is a view showing the general type of weave produced by the take-up mechanism forming the subject matter of the in vention.

Fig. 4; is a detail view illustrating the relative position of the members of the clutch actuating mechanism in a position intermediate of those shown in full and dotted lines respectively in Fig. 2.

The take-up mechanism illustrated herein comprises a usual take-up roll 1 having a gear 2 adapted to mesh with a pinion 3 on the shaft of the cloth roll 4 to impart rotation to the latter until the roll of cloth 5 is of sufficient diameter to be readily driven by frictional engagement with the take-up or sand roll. The shaft 6 of the take-up roll is mounted in suitable bearings in a bracket 7 extending from the frame of the loom and has rotatably mounted upon its end portion a take-up gear 8 which meshes with and is driven by an actuating gear 9 which is a part of a train of gears which may be driven from the cam shaft of the loom in the manner disclosed in the prior patent to Rhoades, or in any other suitable manner.

Clutch mechanism is provided for releasably connecting the hub 10 of the takeup gear to the shaft 6 of the take-up roll. In the preferred construction illustrated herein the hub of the take-up gear is provided with a serrated face which is engaged by av complementary serrated face upon a clutch member 11 which is slidably mounted upon the shaft 6 of the take-up roll and is secured against rotation thereupon by a key and slot connection 12. The clutch member 11 is provided with an annular groove 13 which is engaged by trunnions 14 upon a clutch shifter 15 which is in the form of a yoke the arms of which are pivotally mounted upon brackets or extensions 16 projecting from the bracket 7 in which the take-up roll shaft is journalled The clutch shifter is provided with a downwardly extending relatively wide fiat arm 17 presenting at its lower end portion a beveled face 18 merging into a. relatively wide flat portion 19. A helical spring 20, surrounding the take-up shaft 6 and engaging at one end the bracket 7 and the other end the clutch member 15,

acta normally to maintain the clutch members in eneaeenient and thereby to arise continuous rotation of the take-up roll.

'lhe present inyei'ition comprises means operable through the actuating means at predetermined intervala to ltlLfiFit the clutch members 'l'rom engagement and thereby to permit stoppage of the rotation of the takeup roll.

in order to prevent retrograde movement at the take-up roll when thus released a ratchet 3.2L which is tiaedly secured to the near :2 ol the talcearp roll by suitable pins 212 (lice l igr. :23. or in any other suitable mannciz is cne'agjgetl by a pawl i piyotally i-wured upon a n'aclwt upon the loom trame and which operatet; to prevent rev arse rotation oi the roll.

'lhe preterrtal mean for illl'tfillllteillh' releasing; the clu ilhmtratcd herein coinprism a clutch actuating device which is to tatable with the actuating gear 9, but is adapted to be moved relative (yto the gear by suitable nimilnutism. pretcraii ly operable by the lay. "tor the purpose at releaeingg; the clutch and to have a lost motion until again engaged and released by Suitable mechanism carried by the gear, thus proriding a sutlicient period of lost motion to permit a mute her ot wett threads to be laid compactly while the take-up roll is: stationary, after which the take-up roll will again be actuated continuously to provide the proper spacing tor the weft threads.

in the pr rred cmistruction illuetrated herein the clarch-releasin;1 mechanism comprises a clutch relcasin narm or lever 2% which is juyotally mounted upon the shaft Lid oi the actuating); gear 9. This arm is noriii-ally engagrcd and rotated with the near by a pin or stud o which eimaee the rear tace ot the arm and i: adjustably secured in a slot :3? in the web oi? the near. l)e-.=irably a spring fei tends normally to hold. the arm in en argement with the stud 2U. lhc arm Q-l prm'idcd with an tutti-anion 29 upim the opposite side of its pivotal shaft :23 which deairably is provided with a bifurcated end portion upon which a doe; i-ltl pivotally mounted upon a stud Ill. The dogillustrated rn'elerably is of curved torn] and is pro rided vith a Vyshaped re-entrant end face 3:3. The don is normally held in possition by an adjustable stud il seated in a trans- \'er.--:e web in the (Xl't'iirgitili 2t) and abutting: against a shoulder l-l-l at the pivot end ot' the dog.

The V-.--:hape .l end of the dog: in adapted to be positioned during the rotation )l the near t) in direct aliuement with a dagger 135 which is slidably mounted in suitable journals in a bracket 36 which i secured to the loom side 37. The danger desirably has a squared end portion which is elidably mounted in a complenwntary guideway in one ot the members 00 oi the b 'achet 3G. The oppoaite end portion ill] ot' the dagger desirably is 0'1 cylindricz'il term and is slidably mounted in a suitable barring in the member all) ot the bracket 36. A pin ll, which extenda through the cylindrical portion (it the danger. is normally held against the member 410 ol the braclqet by a helical reprin l2 which surrmmds the rectangular portion ol the dag ee' and abuts at its opposite end agrainri t the member 38 ot the bracket 36. A screw threzuled rod 4- 1 is adjnstably rented in the t \ll;1tllltfttl. end portion oi? the dagger and is provided with a head it adapted to be engaged by the lay sword lf) upon its beat-up. 'l 'he ecrew threaded rod in in provhicd with a check nut l6 by means oi which it may be held in adjusted position. The bracket; as illustrated herein, is provided with an extension t? having); vertical r-lot it; to receive bolts all which clamp said extension to the side t'rame -li', time providinc; means; tor adjusting the bracket verti cally.

a. dog-arres'etimr member fit.) is: mounted upon the horiztmtal web 5i oi" the bracket Sit; and in Flttt'ilttl thereto b a bolt 52 which iasses through a slot 5;) in said d ig=irrestn member, thus providing; a connection by means of which the dog: arre tmg member can be adjusted longitudinally of the bracketthis dog-arrt ting member pref erably being positioned approximately in the horizontal plane 01 the aria ot the sha'lt .55 oi? the actuating gear t).

The function of the don' arrceting member n0 is to hold the dog out oi operative relation to the end oi the dagger it?) during the relatively slow rotation at th t actuating near 9 until such time that the dog: when rcleast-ed may drop quickly into alignment with the dagger. thereby providing;- means tor actuating the clutch releasing arm at a definite predeterminod time.

In the operation oi? the mechanism illustrated herein the actuat' gcarl) rotatea the take'up gear 8 positively and unitormly. Normally the clutch membea are held. in engagement by the heli al spring 12 and the ttalie-np roll is there tore positively and uniilormly rotated during the normal weaving operatimi. its the actuating gear rotates, the engagement between the stud 26 and the clutch l'tlPtlSillg arm :24: *auses the clutch. releasing; arm to be carried along progressively by the rotation ot the gear until it reaches nearly the position illustrated in dotted lines in l te. 2. At this time the projecting notched end portion 32 ot the dog; will engage the dog-arresting member which will hold that end ol the dog tempo 'arily from further movement as the arm approaches the clutch ahiltving member 19. ll'hen the arm has rotated suliiciently so that upon release the dogwill drop into the lit) tilt) horizontal position illustrated in Fig. 2, the dog drops from its arresting member and falls by gravity into the horizontal position illustrated in dotted lines in Fig. 2 at which time the notch 32 in its end is in alinement with the end of the dagger 35. Upon the next beat-up of the lay the lay sword engages the head 44 of the dagger and forces the dagger forwardly (at the left of the position illustrated in Fig. 2) thus engaging the end of the dog and forcing it forwardly, thus rotating the arm 24 upon its pivot so that the beveled face 24* of the clutch actuating arm rides up upon the beveled face .8 of the clutch shifting member and causing the clutch shifting member to slide the movable clutch member 11 upon the shaft 7 until the clutch is released. The clutch actuating member then remains in this position retaining the clutch members out of engagcment until the rear face of the arm 24- is again engaged by the stud 26, whereupon further rotation of the gear will again move the arm 24 with the gear until the arm slides off of the flat face 19 of the clutch shifting member, thereby permitting the spring 12 to restore engagement of the clutch members so that the take-up roll will again be positively driv .1 through the intermeshing gears 9 and 8. In order to limit the field of move ment of the clutch shifting arm 24: a stop, preferably in the form of a stud 54, is adjustably secured in a slot in the actuating gear This stop acts to prevent an overthrow of the clutch releasing arm which might otherwise be caused by the force of the blow given to the dog 30 by the dagger 35 wien the latter is actuated by the lay.

It will thus be seen that the take-up roll is positively driven during the normal weaving operation, but is arrested temporarily during the period of lost motion which intervenes between the clutch releasing movelient of the arm 24: when actuated by the lay and the time in which theclutch releasing arm is again engaged by the stud 26 upon the actuating gear 9 and forced out of engagement with the clutch shifting arm 17 by further continuous rotation of the actuating gear 9.

It will be understood that the embodiment of the invention disclosed herein is of an illustrative character and is not restric tive and that various changes in form, construction and arrangement of parts may be made within the spirit and scope of the following claims.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

1. intermittently actuated talre-up mechanism for looms having a reciprocating lay, operable to produce transverse re-enforcing stripes in the web of fabric, comprising a take-up roll, continuously rotating means take-up roll, continuously rotating means for actuating said take-up roll, means operable conjointly by the lay and said actuating means, at predetermined intervals, to release said takeup roll temporarily from operative relation to said actuating means and means for varying the length of the period during which said take-up roll is released.

3. Intermittently actuated take-up mechanism for looms having a reciprocating lay,

operable to produce transverse re-enforcing stripes in the web of fabric, comprising a take-up roll, means including a continuously rotating gear for actuating said take-up roll and means rotatable co-axially with said gear operable conjointly by the lay and by said gear to release said take-up roll temporarily from operative relation to said actuating gear during a predetermined period in each cycle of rotation of said actuating gear.

4. Intermittently actuated take-up mechanism for looms, operable to produce transverse re-enforcing stripes in the web of fabric, comprising a take-up roll, continuously rotating means for actuating said take-up roll, a clutch intermediate of said actuating means and said take-up roll, a clutch releasing device rotatable with said actuating means and capable of a predetermined lost motion relatively thereto and means for actuating said releasing device to release said clutch and retain the members thereof in inoperative position during said period of lost motion.

5. intermittently actuated take-up mecl'u anism for looms, operable to produce trans verse re-en forcing stripes in the web of fabric, comprising a take-up roll continuously re tating means for actuating said take-up roll. a clutch intermediate of said actuating means and said take-up roll, a clutch releasing device carried by said actuating means capable of a predetermined lost motion relatively thereto and means operable by the movement of the lay for actuating said clutch releasing device to release said clutch and to maintain the members thereof released during the period of lost motion. 1

6. Intermittently actuated take-up mechanism for looms, operable to produce transverse re-enforcing stripes in the web of fabric, comprising a take-up roll, continuously rotating means for actuating said take-up roll, means operable by the lay at predetermined intervals to release said take-up roll ill) from ope alive relation to said actuating means and means operable by said aetuating means to restore operative relation between said talicaip roll and said actuatingmains.

i. intermittentl' actuated take-up mechanism tor looms. operable to produce transverse re-e11 forcing; i-tripes in the web of tab ric comprising a take-up roll. a take-up gear, a clutch intermediate of said new and said roll. an actuating: gear engaging said take-up near. a ctuteii-releasing arm rotatable coaxiallr with said actuating omar. a member on said actuating gear uormall engraeirm' said arm and rotating the same in unison tl1erewith. means operable by the more-men. ot the lav to adi'auee raid arm rolvi hl' i' a prcdete mined distanee relatirel to the moven'ient at said artuating {,Iill' and to eause said arm to relea e said clutch and retain the same in in operative position until said arm is again en rag 'ed by said member.

e. ilntermittently aetuated take-up mechanism tor looms. operable to produce transrerse re-entercin a stripes in the Web of l abric. ctinprisinty a talceaip roll. a take-up gear. a clutch intermei into it raid gear and said all. an actuatiue gear engaging" said lill8- up near. a. clutch-relamino arm rotatable coanially with said aetuatimr gear. a member on said actuating gear normally engaging said arm and rotating); the same in unison therewith. means operable by the movement oi the lay to advance said arm rotatably 1 predeterinined distant-e relatively to i gear and to the movement (1'! said actuatii eause said arm to release said clutch and retain the same in inope'atire position until said a n1 is again engaged by said member and means for adjusting: the field of move ment of said arm.

i). intermittently actuated latte-up mechaniem 'l'or looms. operable to produee trans ver e re-entorcinp; stripes in the Web of l abric. comprising a take-41p ioll. a tal e-up gear, a eluteh iutermeiiliaie at said .tear :1 11d i idroll. an urinating; gear engraving said lalte-up gear. a cluteh-releasin t arm rotal able eoaxia l with said artuatine' near. a member on said aetuatino' near normallr engaging said arm and rotating; lhe same in unison therewith. a dog pirotally mounted upon said arm. a danger positioned to en- ;Iaoje said dog when in a predetermined position and operable by the nmrement ot' the lar to advance said arm relatively to the movement of said actuating means and to "ause said arm to release said clutch and retain the same in inoperative position until said arm is again engaged by said member.

10. Inter1nittentl actuated take-up mechanism tor looms. operable to produce transrerse re-en'lore mr stripes in the WEl.) of 'l'abrie. comp 'ising a take-up roll. a takeup gear, a clutch intermediate of said nea and said roll, an actuating gear enneasaee gaging said talieaip gear. a clutch-releasing arm rotatable e initially with said actuating gear, a member adjustably mounted on said actuating gear normally engaging said arm and rotating the same in unison therewith. a dog pirotally mounted upon said arm. a dagger positioned to engage aaid dog when in a predetermined position and operable by the movement of the lay to advance said arm relatively to the mm'ement oil? said actuating: means and to cause said arm to release said clutch and retain the same in inoperative position until said arm again engaged b said member and a ciroperatii g1 adjustable stop member mounted on etaid gear operable to limit the advancing movement- (it said arm.

1 l. li'itei-iiiit'teutly act uated take-up mechanism l'or looms, operable to produre transverse reenlioreing stripes in the web of 't'abrig. comprising; a take-up roll. a take-up p ear l'OtflltllJly mounted upon the shaft of raid talicaip roll, a spring actuated clutch normally connecting said take-up gear to said roll. a normally continuously rotated actuat get 1'. a lutch-releasinp' arm. a stud 011 said at tuatingr gear normally engaging said arm and ausing the same to rotate in unison with said gear, a gravity ope 'ated dogpirrlally mounted upon said arm. means for temporarily arresting; the dropping movement of said dog above horizontal position during :1 portion of the revolution of said gear. a dagger positioned to engage said dog when the latter drops to horizontal position during further rotation of the gea and operable by the nmrement oi? the la to en- ;rage and actuate said dot; and thereby *ause said arm to disengage the clutch and under it inoperative until said arm is en- ;gaged by said stud.

.12. Intermittently actuated ttdce-upmechanism for looms. operable to produce t 'ans- TOIEEG re-entorcing stripes in the web of tabric. comprising a. tidmmp roll. a talteaip gear rotatablv mounted upon the shaft o'l said take-up roll. a sprin aetuated eluteh nor mally eonnecting said lake-up near to said roll. a normally continuously rotated actuatingnear meshing! with said talnrup gear, a clutcl1-releasing arm. a stud on said aotuatinn gear normally engaging said arm and care-sing the same to rotate in. unison with said near, a gravity operated doe; pivotally mounted upon said arm. means for temporarily arresting the dropping movement or? s 1id dog above horizontal position during a ortion of the revolution of said gear. a n gger positioned to engage said dog when 1e latter drops to horizontal position dur ing further rotation ot the rear and oper able by the movement of the lay to engage and actuate said dog and thereby *ause said arm to disengage the clutch and render it gear meshing with said talteaip' ill) lllt) inoperative until said arm is engaged by said stud and means for limiting the movement of said dog about its pivot, whereby accurate alinement with said dagger may be established.

13. Intermittently actuated take-up mechanism for looms, operable to produce transverse re-enforcing stripes in the web of fabric, comprising a take-up roll, a take-up gear rotatably mounted upon the shaft of said take-up roll, a spring actuated clutch normally connecting said take-up gear to said roll, a normally continuously rotated actuating gear meshing with said take-up gear, a. clutch-releasing arm, a stud on said actuating gear normally engaging said arm and causing the same to rotate in unison with said gear, a gravity operated dog pivotally mounted upon said arm, means for temporarily arresting the dropping movement of said dog above horizontal position during a portion of the revolution of said gear, a dagger positioned to engage said dog when the latter drops to horizontal position during further rotation of the gear and operable by the movement of the lay to engage and actuate said dog and thereby cause said arm to disengage the clutch and render it inoperative until said arm is engaged by said stud, means for limiting the movement of said dog about its pivot, whereby accurate alinement with said dagger may be established and a stop stud adjustably mounted in said gear to limit the advancing movement of said arms.

14. Intermittently actuated take-up mechanism for looms, operable to produce transverse re-enforcing stripes in the web of fabric, comprising a take-up roll, a take-up gear rotatably mounted upon the shaft of said take-up roll, a spring actuated clutch normally connecting said take-up gear to said roll, a normally continuously rotated actuating gear meshing with said take-up gear, a clutch-releasing arm, a stud on said actuating gear normally engaging said arm and causing the same to rotate in unison with said gear, a gravity operated dog pivotally mounted upon said arm, means for temporarily arresting the dropping movement of said dog above horizontal position during a portion of the revolution of said gear, a dagger positioned to engage said dog when the latter drops to horizontal position during further rotation of the gear and operable by the movement of the lay to engage and actuate said dog and thereby cause said arm to disengage the clutch and render it inoperative until said arm is engaged by said stud and means for vertically adjusting the position of said dagger. 15. intermittently actuated take-up mechanism for looms, operable to produce transverse re-enforcing stripes in the web of fabric, comprising a take-up roll, a take up gear rotatably mounted upon the shaft of said take-up roll, a spring actuated clutch normally connecting said take-up gear to said roll, a normally continuously rotated actuating gear meshing with said take-up gear, a clutchreleasin arm, a stud on said actuating gear normally engaging said arm and causing the same to rotate in unison with said gear, a gravity operated dog pivotally mounted upon said arm, means for tempoia rily arresting the dropping movement of said dog above horizontal position during a portion of the revolution of said gear, adag ger positioned to engage said dog when the latter drops to horizontal position during further rotation of the gear and operable by the movement of the lay to engage and ac tuate said dog and thereby cause said arm to disengage the clutch and render itinoperative until said arm is engaged by said stud and means for adjustingsaid dog-arresting means, whereby said dog may be retained out of the path of the dagger until the arm is so positioned that the end of the dog will drop into alinement therewith.

In testimony whereof, I have signed my name to this specification.

HORACE H. BURDETT. 

